A transformer with 5500 turns in its primary is used between a 240V a. c supply and a 120V kettle. Calculate the number of turns in the secondary
A
11000
B
2750
C
460
D
232
E
10
Verified Correct Answer: B.
Physical Principles & Numerical Solution
\(\frac{E_p}{E_s}\) = \(\frac{n_p}{n_s}\)
\(\frac{240}{120}\) = \(\frac{5500}{n_s}\)
=> n\(_s\) = 2750
Source: Myschool Past Questions Archive (Record #21252)